<?php
/**
 * CodeIgniter
 *
 * An open source application development framework for PHP
 *
 * This content is released under the MIT License (MIT)
 *
 * Copyright (c) 2014 - 2016, British Columbia Institute of Technology
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *
 * @package    CodeIgniter
 * @author    EllisLab Dev Team
 * @copyright    Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
 * @copyright    Copyright (c) 2014 - 2016, British Columbia Institute of Technology (http://bcit.ca/)
 * @license    http://opensource.org/licenses/MIT	MIT License
 * @link    https://codeigniter.com
 * @since    Version 1.0.0
 * @filesource
 */
defined('BASEPATH') OR exit('No direct script access allowed');

/**
 * CodeIgniter Smiley Helpers
 *
 * @package        CodeIgniter
 * @subpackage    Helpers
 * @category    Helpers
 * @author        EllisLab Dev Team
 * @link        https://codeigniter.com/user_guide/helpers/smiley_helper.html
 * @deprecated    3.0.0    This helper is too specific for CI.
 */

// ------------------------------------------------------------------------

if (!function_exists('smiley_js')) {
    /**
     * Smiley Javascript
     *
     * Returns the javascript required for the smiley insertion.  Optionally takes
     * an array of aliases to loosely couple the smiley array to the view.
     *
     * @param    mixed    alias name or array of alias->field_id pairs
     * @param    string    field_id if alias name was passed in
     * @param    bool
     * @return    array
     */
    function smiley_js($alias = '', $field_id = '', $inline = TRUE)
    {
        static $do_setup = TRUE;
        $r = '';

        if ($alias !== '' && !is_array($alias)) {
            $alias = array($alias => $field_id);
        }

        if ($do_setup === TRUE) {
            $do_setup = FALSE;
            $m = array();

            if (is_array($alias)) {
                foreach ($alias as $name => $id) {
                    $m[] = '"' . $name . '" : "' . $id . '"';
                }
            }

            $m = '{' . implode(',', $m) . '}';

            $r .= <<<EOF
			var smiley_map = {$m};

			function insert_smiley(smiley, field_id) {
				var el = document.getElementById(field_id), newStart;

				if ( ! el && smiley_map[field_id]) {
					el = document.getElementById(smiley_map[field_id]);

					if ( ! el)
						return false;
				}

				el.focus();
				smiley = " " + smiley;

				if ('selectionStart' in el) {
					newStart = el.selectionStart + smiley.length;

					el.value = el.value.substr(0, el.selectionStart) +
									smiley +
									el.value.substr(el.selectionEnd, el.value.length);
					el.setSelectionRange(newStart, newStart);
				}
				else if (document.selection) {
					document.selection.createRange().text = smiley;
				}
			}
EOF;
        } elseif (is_array($alias)) {
            foreach ($alias as $name => $id) {
                $r .= 'smiley_map["' . $name . '"] = "' . $id . "\";\n";
            }
        }

        return ($inline)
            ? '<script type="text/javascript" charset="utf-8">/*<![CDATA[ */' . $r . '// ]]></script>'
            : $r;
    }
}

// ------------------------------------------------------------------------

if (!function_exists('get_clickable_smileys')) {
    /**
     * Get Clickable Smileys
     *
     * Returns an array of image tag links that can be clicked to be inserted
     * into a form field.
     *
     * @param    string    the URL to the folder containing the smiley images
     * @param    array
     * @return    array
     */
    function get_clickable_smileys($image_url, $alias = '')
    {
        // For backward compatibility with js_insert_smiley
        if (is_array($alias)) {
            $smileys = $alias;
        } elseif (FALSE === ($smileys = _get_smiley_array())) {
            return FALSE;
        }

        // Add a trailing slash to the file path if needed
        $image_url = rtrim($image_url, '/') . '/';

        $used = array();
        foreach ($smileys as $key => $val) {
            // Keep duplicates from being used, which can happen if the
            // mapping array contains multiple identical replacements. For example:
            // :-) and :) might be replaced with the same image so both smileys
            // will be in the array.
            if (isset($used[$smileys[$key][0]])) {
                continue;
            }

            $link[] = '<a href="javascript:void(0);" onclick="insert_smiley(\'' . $key . '\', \'' . $alias . '\')"><img src="' . $image_url . $smileys[$key][0] . '" alt="' . $smileys[$key][3] . '" style="width: ' . $smileys[$key][1] . '; height: ' . $smileys[$key][2] . '; border: 0;" /></a>';
            $used[$smileys[$key][0]] = TRUE;
        }

        return $link;
    }
}

// ------------------------------------------------------------------------

if (!function_exists('parse_smileys')) {
    /**
     * Parse Smileys
     *
     * Takes a string as input and swaps any contained smileys for the actual image
     *
     * @param    string    the text to be parsed
     * @param    string    the URL to the folder containing the smiley images
     * @param    array
     * @return    string
     */
    function parse_smileys($str = '', $image_url = '', $smileys = NULL)
    {
        if ($image_url === '' OR (!is_array($smileys) && FALSE === ($smileys = _get_smiley_array()))) {
            return $str;
        }

        // Add a trailing slash to the file path if needed
        $image_url = rtrim($image_url, '/') . '/';

        foreach ($smileys as $key => $val) {
            $str = str_replace($key, '<img src="' . $image_url . $smileys[$key][0] . '" alt="' . $smileys[$key][3] . '" style="width: ' . $smileys[$key][1] . '; height: ' . $smileys[$key][2] . '; border: 0;" />', $str);
        }

        return $str;
    }
}

// ------------------------------------------------------------------------

if (!function_exists('_get_smiley_array')) {
    /**
     * Get Smiley Array
     *
     * Fetches the config/smiley.php file
     *
     * @return    mixed
     */
    function _get_smiley_array()
    {
        static $_smileys;

        if (!is_array($_smileys)) {
            if (file_exists(APPPATH . 'config/smileys.php')) {
                include(APPPATH . 'config/smileys.php');
            }

            if (file_exists(APPPATH . 'config/' . ENVIRONMENT . '/smileys.php')) {
                include(APPPATH . 'config/' . ENVIRONMENT . '/smileys.php');
            }

            if (empty($smileys) OR !is_array($smileys)) {
                $_smileys = array();
                return FALSE;
            }

            $_smileys = $smileys;
        }

        return $_smileys;
    }
}
